Self-furring metallic lath.



H. E. WHITE.

SELF FURRING METALLIC LATE. APPLICATION FILED 11:12.4, 1910.

Patented Jan 9, 1912.

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H. E. WHITE.

SELF FURRING 113111110 LATH.

APPLICATION FILED PEBA, 1910. I

Patented Jam 9,1912.

2 SHEETS-SEEB'IB.

UNITED STATES PATENTOFFICE.

HERBERT -E. WHITE, 0F YOUNGSTOWN, OHIO, ASSIGNOIR. TO THE GENERAL FIRE- PIROOFING COMPANY, OF YOUNGSTOWN, OHIO, A. CORPORATION OF OHIO.

SELF-FUBRING METALLIC LATI-I Specification of Letters Patent.

Patented Jan. 9, 1912.

Application filed February 4, 1.910. Serial No. 541,962.

To (all "whom it may concern:

Be itknown that I, HERBERT E. Vii-IITE, of Youngstown, Mahoning county, Ohio, have invented a new and useful Self-Furring Metallic Lath, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specification, in which- Figure 1 is a plan View of a piece of lathing embodying my invention; F 1g. 2 is an end View of the same; Figs. 3 and 4 are views similar to Figs. 1 and 2 respectively, but showing a modification; Fig. 5 is a perspective view, showing a portion of the .blank from which the lath is constructed;

and Figs. (3, 7 and 8 are end views of dif ferent forms of laths embodying my invention; Fig. 9 is an end view illustrating a lathing composed of a number of similar units.

My vinvention has relation to self-furring metallic laths, and moreparticularly to laths of this character formed of expanded metal; and the object. of the invention is to provide lathing of thischaracter which can be readily and cheaply manufactured; which will provide an efficient bonding for the plaster, andwhich will possess maximum strength and stiifness.

The precise nature of my invention will be best understood by reference to the accompanying drawings, in which I have shown several forms thereof, and which will nowbe described. V

In the manufacture of my improved lathing, I first form a blank such as shown in Fig. 5, consisting of a' flat central portion 2 having its edges bent downwardly and then upwardly to form the side ribs 3. This blank is then cut or slitted by two oppositely divided series of cuts 4 and 5, one series of cuts being made along each side of the center of the flat portion of the blank. I next subject the blank to a bending operation (or this may be done simultaneously with the cutting), so as to formthe central rib (i in Figs. 1 and 2, this rib being of U-A, shape in cross-section and opening rear wardly. I,..also bend rearwardly the inner edge portions of the side ribs 3 to form lips '7, in the manner clearly shown in Fig. 2.

article shown in Fig. 1,in which the central slats 8 will of necessity be compelled to form a half bend or twist, as clearly shown in Figs. 1 and 2, which greatly stiffens the lathing. I v

The form shown in Figs. 3 and 4 is the same as that shown in Figs. 1 and 2, ex-

cept that the central U-shaped rib 6 instead. of opening backwardly as in Figs. 1-

and 2, opens forwardly. I'Vith the rib this .way, in order to produce the half bends or twists in the ribs or slats 8 it is necessary to subject them to a flattening or rolling action. I

The modification shown in Fig. 6 is similar to the form shown in Figs. 1 and 2, ex-

cept that the central rib 6" instead of beingv U-shaped is V-shaped. In the form shown in Fig. 7, the central rib 6 is formed by bending the central portion of the metal obliquely. In the form shown in Fig. 8, the central rib 6* is of S or Z-form in crosssection. Inthis form, as well as in the form shown in Fig. 6, the slats do not have the half twists or bends. In the form shown in Fig. 7, the central rib 6 stands substantially parallel with the inner portions of the side ribs, and this causes the slats 8 to lie in substantially horizontal planes. It

will be obvious that various other changes can be made in the form of the central rib.

The outer portions of the side ribs may be formed with a series of perforations or openings 10 to increase the bonding effect. These perforations can be readily made in the blank during the first operation thereon, which shapes-the blank into the form shown in Fig.

For convenience of illustration and description, in {Figs 1 to 7, I have illustrated the manufacture of a single unit of the lathing. In practice, however, I prefer to form relatively wide sheets composed of a plurality of similar connected units: In Fig. 9, I have shown a sheet composed of two of the units A and B-and a portion of a third unit C; and I desire it understood that the structure may be of any practical width and number of units. I,

My invention provides a metallic lathing which can be manufactured rapidly and at a comparatively low cost-;" which has a good bending action; which is self-furring, no separate furring strips being applied, and which, although it may be formed of thin metal, possesses a high degree of stiffness and strength.

What I claim is I 1. As a new article of manufacture, a slit-- ted and expanded sheet metal structure, consisting of slitted and unslittedportions, and

having relatively deep ribs consisting of bent unslitted portions of the metal and a shallow rib'intermediate of and connected to the deep ribs by oppositely directed slats, at least some of the deep ribs having their edges ladjacent to the slitted portions formed witlijf 'reverse bends facing the opposite side of tlie= structure from the deep ribs themselve's',-substanti'ally as described.-

2. As a new article of manufacture, a slitted and ex anded sheet metal structure, consisting of s ittpd and unslitted portions, and

having relatively deep spaced ribs consisting of bentvunslitted portions of the metal, and

, sisting of rection from the deep ribs themselves, and

also having shallow, ribs intermediate the deep ribs, -each shallow rib being connected with the upper inner portions of the adjacent side rlbs by means of two series of opthe opposite my hand;

positely disposed slats formed by the expansion of the slitted portions of the metal sheet; substantially as described.

4. As a new article of manufacture, a slitted and expanded sheet metal structure con sisting of slitted and unslit-ted portions and having deep ribs consisting of bent unslitted portions of the metal, said ribs having relatively narrow reversely bent lips at their edges, and a central shallow rib connected with the deep ribs by series of oppositely directed slats, the outer portions of the deep ribs having perforations therein; substantially as described.

As a new article of manufacture, a slit-v ted and expanded. sheet metal structure consisting of slitted and unslitted portions and having deep, spaced ribs, consisting of unslitted portions of the metal sheet, and a central shallow rib between each pair of deep.

ribs connected thereto by two series of oblique slats, the central rib opening rearwardly, and the inner edges of the deep ribs having rearwardly extending lips whereby their edges face in the opposite direction from the ribs themselves, substantially as described. I

6. An expanded sheet. metal structure, consistingof alternate slitted and unslitted portions, the unslitted portions being bent out of the flat plane of the structure to form ribs, some of said ribs extending from the fiat plane of the structure sufliciently to form furring ribs, and theother ribs intermediate the deep-ribs being shallow and of substantially the same depth 'as the thickness of the flat portion of the structure,.and at least some of the deep ribs having reverse bends connecting them with the adjacent slitted portions; substantially as described. In testimony whereof, I have hereunto set HERBERT -E. WHITE. Witnesses I G. Y. FARRELL, H. R. GLENN.

Copies of this patent may be obta ined'for f ve cents each, by addressing the Commissioner of Patents,

' Washington, D. 0. 

